<?php
class Shape
{
     public  function getArea(){}
    public  static function  getPi(){
        return 3.14;
    }
}
class Rectangle extends Shape
{
    private  $width,$height;
    public function __construct($width,$height)
    {
        $this->height=$height;
        $this->width=$width;
    }
    public  function _construct(){
        return $this->width*$this->height;
    }
}
?>

